General information

Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model and enough information to identify the ecological site.

MLRA notes

Major Land Resource Area (MLRA): 122X–Highland Rim and Pennyroyal

MLRA 122 is in Tennessee (47 percent), Kentucky (43 percent), Indiana (7 percent), and Alabama (3 percent). It makes up about 21,530 square miles (55,790 square kilometers).

SOILS:
Many of the soils in this MLRA are Udalfs. The moderately deep to very deep, well drained, clayey soils formed in limestone residuum. They are dominantly in rolling to steep areas of the “Outer Basin” (Mimosa, Braxton, Gladdice, and Hampshire series) and the undulating to hilly areas of the “Inner Basin” (Talbott and Bradyville series). The most agriculturally productive soils are the very deep, well drained, clayey or loamy soils that formed in alluvium and/or loess over alluvium or limestone residuum in nearly level to undulating areas (Armour, Cumberland, Harpeth, Lomond, and Maury series). The less extensive soils generally are moderately well drained to somewhat poorly drained and formed in loamy or clayey alluvium and/or residuum (Byler, Capshaw, Colbert, and Tupelo series). This MLRA has a significant acreage of Mollisols. Shallow or moderately deep, well drained, clayey Udolls (Ashwood and Barfield series) formed in limestone residuum dominantly in rolling to steep areas. Very shallow, well drained, clayey Rendolls (Gladeville series) formed in limestone residuum dominantly in undulating to rolling areas of the “Inner Basin.” Very deep, well drained or moderately well drained Udolls (Arrington, Egam, Lynnville, and Staser series) and somewhat poorly drained or poorly drained Aquolls (Agee, Godwin, and Lanton series) formed in loamy or clayey alluvium derived from limestone on flood plains. Most of the remaining soils on flood plains are moderately well drained or well drained Udepts (Lindell and Ocana series). Udults are of small extent in this area. Most are very deep, well drained, and loamy and formed in gravelly colluvium or colluvium and the underlying residuum on steep hillsides (Dellrose soils). Rock outcrops are common on uplands.

BIOLOGICAL RESOURCES:
This area supports mixed oak forest vegetation. White oak, black oak, northern red oak, and some scarlet oak are the dominant tree species. Shagbark hickory, bitternut hickory, pignut hickory, and mockernut hickory also occur. Oak, blackgum, flowering dogwood, sassafras, Virginia pine, pitch pine, and shortleaf pine grow mostly on ridgetops.

(Excerpt from United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land Resource Regions and Major Land Resource Areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296.)

Classification relationships

NatureServe Scientific Name: South-Central Interior Large Floodplain -Unique Identifier: CES202.705
NatureServe Scientific Name: South-Central Interior Small Stream and Riparian- Unique Identifier: CES202.706

Ecological site concept

The communities described in this provisional document reflect plant communities that are likely to be found on these soils. This PES describes hypotheses based on available data of many different scales and sources and has not been developed utilizing site-specific ecological field monitoring. Field studies would be required for detailed conservation planning or to develop a comprehensive and science-based restoration plan for these sites.

Future field work may determine that this grouping be modified or split into multiple ESDs. Soil series may be added or removed pending field verification.

Only two tree species can be selected for entry into the ESIS/EDIT database as dominants; however, multiple tree species may be co-dominant on these sites.

State 1, Phase 1.1: Forestland.
Plant species dominant:
Quercus spp. (oaks)- Populus deltoides (eastern cottonwood) / Salix nigra (black willow) / sedges (Carex spp.)

State 2, Phase 2.1: Pastureland.
Plant species dominant:
Schedonorus arundinaceus (tall fescue).
Species present are dependent upon management.

State: 3. Phase 3.1: Transitional (Abandoned Field)
Plant species dominant: maples (Acer spp.) – American cottonwood (Populus deltoides) / berries (Rubus spp.) / Schedonorus arundinaceus (tall fescue)
Species will depend on seed sources, level of management, and ongoing disturbance levels.

State 4, Phase 4.1: Abandoned Cropland
Plant species dominant: henbit deadnettle (Lamium amplexicaule) – mouse-eared chickweed (Cerastium L.)
Composition and successional species will vary according to seed sources, disturbances, and management efforts.

State 5, Phase 5.1: Cropland.
Plant species dominants: dependent upon seeding and management.
Most common crops are corn and soybeans.

Restoration of states 2-5 to the reference community would require long-term, intensive management inputs. Hydrological restoration may be required

Table 1. Dominant plant species